Thorough cleaning of the oven is a weekly task. Weekly cleaning includes the fingers, conveyor, end baffles, door, air intake vents, and stand. This process should take about an hour per oven. Be sure to leave the ventilation systems operating while cleaning the oven and be sure your work area is well ventilated.
You'll need an oven non-caustic degreaser, a mild solution soapy water, a three to five gallon bucket of warm rinse water, an oven brush, four or five dry towels, and a three-compartment sink with faucet and sprayer. You'll need a long sleeve cotton shirt, a pair of goggles, and rubber gloves.
The first weekly cleaning task is removing and cleaning the conveyor and end baffles. Remove the end baffles by turning the thumb screws counterclockwise. Spray them with the oven non-caustic degreaser and allow them to sit while cleaning the conveyor. To remove the conveyor on an Impinger II Advantage oven, remove the external crumb trays, remove the drive sprocket shield, hold the rubber coupling, and pull it towards the conveyor. Then lift the conveyor so the locking tab is clear. If the conveyor will not release easily, lift the opposite end and push.
We'll clean the conveyor over a three-compartment sink. We're going to start by using our oven non-caustic degreaser. Spray the entire conveyor assembly with oven non-caustic degreaser; it'll take about 20 minutes for the grease to dissolve. Then rinse and air dry. The door of the Impinger II Advantage oven can be removed by lifting from the hinges. Do not submerge the door or get it unnecessarily wet, this will damage the installation. Wipe the door with warm soapy water, then rinse and dry.
Now it's time to remove and clean the fingers. Remove the top finger first by lifting up and pulling towards you. Move the bottom finger next by pulling towards you. Now disassemble the finger housing for cleaning. Slide the finger covering from the housing, lift out the inner columnating panel, spray the finger covers with oven non-caustic oven degreaser and allow to sit for 20 minutes. Wash the finger housings and columnating panels in warm soap water in the three-compartment sink. Leave the close-off plates, if being used, securely locked to the columnating panel. Rinse off all parts with clean water when they are thoroughly cleaned. Then stand all the parts up to air dry.
While you're waiting for the fingers and conveyor to dry, you can clean the inside of the Impinger oven. Remember that this is a daily task, but now that the fingers are out, you'll be able to clean more thoroughly. Use a non-caustic degreaser. Don't forget to use the outside too. Non-caustic degreaser can be used for spot applications on the outside of the oven, if needed. Do not use a caustic oven cleaner or degreaser on the interior of the oven. Clean all the vents and louvers that are on the right hand and rear of the oven. Cooling fan covers need special attention, keeping these clean allows cool air to circuit into the control box and around the main fan motor, prolonging oven component life.
The parts you washed should be dry, so let's put the fingers back together. With the panel number facing up, insert the columnating panel so it fits securely inside the finger housing. Any close-offs used for oven zoning should be secure but check to make be sure locknuts are tight. Slide the cover over the finger. Now we can reinstall the fingers. Make sure the finger housings are fully seated around the plenum flanges. Air jet holes must point towards the conveyor. When the conveyor is dry, hold the right hand and reinsert the conveyor into the oven. Now connect the drive sprocket and tighten the set screw. Rinse the end baffles, dry thoroughly, and reposition over each oven cavity opening.
The Impinger II Advantage oven conveyor should not need any adjustment, but if the belt becomes too loose call your service agency to adjust it. Next slide the crumb pans into the rails under the conveyor, and install the optional conveyor take-off shelf. Replace the door by setting it back into the hinges. Spray the stand frame and casters with oven non-caustic degreaser and allow them to sit. Rinse with clear water and wipe dry. Be sure to clean up any over spray on the floor.
Let's review our weekly cleaning jobs. We disassembled and cleaned the conveyor belt, crumb pans, baffles, and the fingers. Then we cleaned the inside and outside of the oven, including the air intake vents and louvers and the stand. Then we reinstalled the fingers, conveyor belt, crumb pans, and end baffles.
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The weekly cleaning procedure for 1100 series Impinger ovens from Lincoln is reviewed. Follow these guidelines to keep the exterior and interior clean.
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